Ikumaru Saionji

He became the head of the Saionji family after the death of his parents. Because of his power said to have the most magic in his family since 200 years he became the Chairman of the Magic Association. However due to an accident likely related to the Sin Gluttony and Konoha he lost most of his magic powers and is now no longer the Chairman and is just a normal high school student. His Sin: Gluttony eats everything including magic energy. Although Gluttony is a strong Sin it has the side effect of eating up Ikumarus energy and lust. Which is why he is sleeping most of the time and has no interest in girls to Konohas dismay. According to Konoha he saved her life. But something went wrong and until Konohas condition is stable he would not leave her side. or maybe she leave his side since she stays in his home He has a little sister who is taking his place as the Magic Associations Head.